The Reflex kite from Revolution is still being developed & there are probably newer versions/sizes on the horizon.  The kite I received from Riffclown a few weeks ago was from the second run of the new kite produced I believe last Spring.  The first run had just the metal spring & the normal carbon tube.  The concern of the springs rubbing & wearing the vertical tubes became an issue.  In the second batch it had been addressed by a sleeve or coating being applied to the springs thems